Class PhusionPassenger::ClassicRails::ApplicationSpawner
In: lib/phusion_passenger/classic_rails/application_spawner.rb
Parent: AbstractServer

Spawning of Rails 1 and Rails 2 applications.

ClassicRails::ApplicationSpawner can operate in two modes:

  • Smart mode. In this mode, the Rails application‘s code is first preloaded into a temporary process, which can then further fork off application processes. Once the code has been preloaded, forking off application processes is very fast, and all the forked off application processes can share code memory with each other. To use this mode, create an ApplicationSpawner object, start it, and call spawn_application on it. A single ApplicationSpawner object can only handle a single Rails application.
  • Conservative mode. In this mode, a Rails app process is directly spawned without any preloading. This increases compatibility with applications. To use this mode, call ApplicationSpawner.spawn_application.

Methods

Included Modules

Utils DebugLogging

Classes and Modules

Class PhusionPassenger::ClassicRails::ApplicationSpawner::Error

Attributes

app_root  [R]  The application root of this spawner.

Public Class methods

The following options are accepted:

  • ‘app_root‘

See SpawnManager#spawn_application for information about the options.

Spawns an instance of a Rails application. When successful, an AppProcess object will be returned, which represents the spawned Rails application.

This method spawns the application directly, without preloading its code. This method may only be called if no Rails framework has been loaded in the current Ruby VM.

The "app_root" option must be given. All other options are passed to the request handler‘s constructor.

Raises:

  • AppInitError: The Ruby on Rails application raised an exception or called exit() during startup.
  • SystemCallError, IOError, SocketError: Something went wrong.

Public Instance methods

Spawns an instance of the Rails application. When successful, an AppProcess object will be returned, which represents the spawned Rails application.

options will be passed to the request handler‘s constructor.

Raises:

Overrided from AbstractServer#start.

May raise these additional exceptions:

[Validate]